C12 SCIENTIFIC KECOKD FOR 1882. 



(Ajyodes.) 



Goode (G. Brown). Notes on the life-history of the Eel, chiefly derived from a study 



of recent European authorities. Bull. U. S. FishComm., v. 4, pp. 71--r24. 

 Hermes (O.). On the mature sexual organs of the Conger-eel {Conger vulgaris), with 



some observations on the male of the common eel {Anguilla vulgaris Flem.). Bull. 



U. S. Fish Comm., v. 4, pp. 126-130. 

 Pauly (Aug.). Beitrag zur Anatomic der Schwimmhlase des Aals {Anguilla fluviatilis 



Fl.). Dissert, (pro veni a leg.). Miinchen, 1882. (8^,22 pp.). 

 Weyenbergh (H.) Morphologische Aanteekeningen over de Proest-alen of Sym- 



branchidaj. Met 1 pi. Periodico Zoolog., t. 3, pp. 278-308. 



{Hventognathi.) 



Noll (F. C). Ein achtunddreissigjlihriger Karpfen. Zool. Garten, 23. Jahrg., pp. 

 225-234. 



{Haplomi.) 



Hermann (Otto). Umhra canina. Mit 1 Taf. Term^sz. Fiizetek, 5. Bd., p. 275. 

 Kiiroli (J.). Umhra canina Mars. Term^sz. Fiizetek, 5. Bd., pp. 274-275. 

 Walther ( Johann). Die Entwicklung der Deckknochen am Kopfskelet des Hechtes 

 (Esox lucius). Mit 2 Taf. Jena. Zeitschr. f. Naturwiss., 16. Bd., pp. 59-87. 



{Hemibranchii. ) 



Ryder (J. A.). Notes on the development, spinning habits, and structure of the four- 

 spined Stickleback, Apeltes quadracus. Bull. U. S. Fish Comm., v. 4, pp. 24-29. 



{Jugulares.) 



Emery (Carlo). Contribuzioni all' Ittiolgia. [III. Aggiunte alia sinonimia e alia 

 storia naturale dei Fierasfer ; IV. Sulle cordizioni di vita di giovani individui del 

 Tetragonurus Cuvieri.] Mittheil. zool. Station Neapel, 3. Bd., pp. 281-283. 



Parker (T. Jeffery). Connection of the air-bladder with the auditory organs in the 

 Red Cod (Lotella bacchus). New Zeal. Journ. of Sc, v. 1, pp. 185-186. 



The Iddney of fishes. 



The Ganoid and Teleost — that is, all true fishes — have in their larval 

 stage " two very distinct excretory organs, viz, a pronephros or head- 

 kidney, and a mesonephros or Wolffian body, which are usually sepa- 

 rated from each other by a more or less considerable interval." It has 

 been contended that the pronephros is especially, and sometimes, even, 

 as in Lophhis, exclusively developed as the kidney in fishes ; but prior 

 to the discovery of the development of the pronephros, as well as 

 mesonephros, "it was a matter of no very great importance to know 

 whether the anterior part of the so-called kidney was a true excretory 

 organ. In the present state of our knowledge the question is, however, 

 one of considerable interest." Professor Balfour, consequently, investi- 

 gated the morphology of the organ in several types of fishes — the Stur- 

 geon, Bony Gar, Smelt, Pike, Eel, and Angler. He Avas led to the con- 

 clusion that the pronephros becomes atrophied, and probably never 

 persists in either the Ganoids or Teleosts, but "is always a purely 

 larval organ, which never constitutes an active part of the excretory 



